❇️❇️📚Important question📚❇️❇️ ❇️❇️📚Chemical Formula📚❇️❇️ common salt = NaCl साधारण नमक = NaCl Baking Soda = NaHC O₃ बेकिंग सोडा = NaHC O₃ Washing soda = Na₂CO₃ 10H₂O धोवन सोडा = Na₂CO₃·10H₂O caustic soda = NaOH कास्टिक सोडा = NaOH Alum = K₂SO₄ Al₂(SO₄)₃ 24H₂O फिटकरी = K₂SO₄·Al₂(SO₄)₃·24H₂O Red medicine = KMnO₄ लाल दवा = KMnO₄ caustic potash = KOH कास्टिक पोटाश = KOH lime water = Ca(OH)₂ चूने का पानी = Ca(OH)₂ Gypsum = CaSO₄ 2H₂O जिप्सम = CaSO₄·2H₂O Plaster of Paris = CaSO₄ ½H₂O प्लास्टर ऑफ पेरिस = CaSO₄·½H₂O chalk = CaCO₃ चॉक = CaCO₃ limestone = CaCO₃ चूना-पत्थर = CaCO₃ Marble = CaCO₃ संगमरमर = CaCO₃ Nausadar = NH₄Cl नौसादर = NH₄Cl Laughing gas = N₂O लाफिंग गैस = N₂O Litharge = PbO लिथार्ज = PbO Galena = PbS गैलेना = PbS White lead = 2PbCO₃ Pb(OH)₂ सफेद लेड = 2PbCO₃·Pb(OH)₂ salt acid = HCl नमक का अम्ल = HCl Acidum = HNO₃ + HCl (1 : 3) अम्लराज = HNO₃ + HCl (1 : 3) dry ice = CO₂ शुष्क बर्फ = CO₂ Horn Silver = AgCl हॉर्न सिल्वर = AgCl heavy water = D₂O भारी जल = D₂O Producer gas = CO + N₂ प्रोड्यूशर गैस = CO + N₂ marsh gas = CH₄ मार्श गैस = CH₄ Vinegar = CH₃COOH सिरका = CH₃COOH alcohol = C₂H₅OH ऐल्कोहॉल = C₂H₅OH Sugar = C₁₂H₂₂O₁₁ चीनी = C₁₂H₂₂O₁₁ urea = NH₂CONH₂ यूरिया = NH₂CONH₂ Benzene = C₆H₆ बेंजीन = C₆H₆